Radisys Wins 2010 INTERNET TELEPHONY Excellence Award for Voice Quality Enhancement Software

Radisys Convedia Media Servers with VQE solution honored for improving audio quality and delivering exceptional IP communications solutions.

HILLSBORO, Ore. — November 23, 2010 — Radisys® Corporation (NASDAQ: RSYS), a leading provider of innovative hardware and software platforms for next generation IP-based wireless, wireline and video networks, today announced that Technology Marketing Corporation (TMC) has named Radisys’ Voice Quality Enhancement (VQE) software, available today on the Radisys Convedia media server family, as a recipient of the 2010 INTERNET TELEPHONY Excellence Award presented by INTERNET TELEPHONY magazine.

Next-generation VoIP conferencing platforms based on IP media servers are increasingly being deployed by conferencing service providers (CSPs) around the globe. However, VoIP calls have not been known to provide the same voice quality as PSTN calls. The economic benefits of VoIP services are compelling, but consumers won’t migrate to VoIP unless they perceive the voice quality to be as good as or better than traditional PSTN voice services. Radisys VQE software is specifically designed to address the common sources of poor voice quality in VoIP networks, including noise, packet loss and echo, while providing a robust set of quality metrics suitable for service level agreement (SLA) reporting.

“The editors of INTERNET TELEPHONY were pleased to grant Radisys with an INTERNET TELEPHONY Excellence Award for their achievements in advancing IP communications and providing genuine solutions in the marketplace,” said Erik Linask, group editorial director of INTERNET TELEPHONY. “Radisys’ VQE solution has proven Radisys’ outstanding contribution to IP communications, while delivering differentiated solutions for its customers.”

“As VoIP moves from a niche technology and gains traction among major carriers, providers must address the challenges of delivering good voice quality via IP-based communication services,” said David Smith, general manager, Radisys media server business unit. “Our VQE software is designed to overcome the challenges created by IP packet networks, and provides an economical solution for service providers to offer differentiated high-quality VoIP services to their customers.”

About the Radisys VQE Solution

The Radisys family of Convedia® Media Servers with integrated VQE technology cost-effectively overcomes the sources of poor voice quality in IP packet networks. For VoIP services experiencing audio noise caused by background sounds or network and terminal equipment, VQE implements a combination of noise gating, noise reduction and noisy line detection mechanisms that reduce and help manage the disturbing effect of audio noise. VQE technology also includes packet loss concealment by intelligently restoring audio packets lost or unacceptably delayed by traffic congestion on the Internet. Radisys’ Convedia Media Servers with VQE also remove acoustic echo by continuously monitoring all VoIP call legs, dynamically detecting echoes and selectively applying echo cancellation. Finally, all VQE features are supported with new audio and packet statistics, allowing service providers to continuously measure audio quality for performance measurement and support SLAs with customers.

The 2010 INTERNET TELEPHONY Excellence Award winners are published in the October 2010 issue of INTERNET TELEPHONY magazine, www.itmag.com. For more information, please visit www.tmcnet.com.

About INTERNET TELEPHONY magazine

INTERNET TELEPHONY has been the IP Communications Authority since 1998™. Beginning with the first issue in February of 1998, INTERNET TELEPHONY magazine has been providing unbiased views of the complicated converged communications space. INTERNET TELEPHONY offers rich content from solutions-focused editorial content to reviews on products and services from TMC Labs. INTERNET TELEPHONY magazine reaches more than 225,000 readers, including pass-along readers. For more information, please visit www.itmag.com.

About TMC

Technology Marketing Corporation (TMC) is a global, integrated media company helping our clients build communities in print, in person and online. TMC publishes Customer Interaction Solutions, INTERNET TELEPHONY, Unified Communications, and NGN magazines. TMCnet, TMC’s website, is the leading source of news and articles for the communications and technology industries.

TMCnet is read by nearly two million unique visitors each month on average worldwide, according to Webtrends.Alexa.com ranks TMCnet traffic under 1,700 in the U.S. and India and under 4,000 in the Philippines, Canada and Ireland. TMCnet traffic ranks just over 4,000 in overall global traffic, according to Alexa.com.

In addition, TMC produces ITEXPO; 4GWE Conference and M2M Evolution (in conjunction with Crossfire Media);Digium|Asterisk World (in conjunction with Digium); and Smart Grid Summit (in conjunction with Intelligent Communication Partners). TMC serves other communications market segments with the Cloud Communications Summit(in conjunction with Light and Electric); CVx ChannelVision Expo (in conjunction with Beka Publishing); and MSPWorld™ (in conjunction with the MSP Alliance).

TMC also serves technology professionals with industry-specific websites: InfoTech Spotlight, 4GWE, M2M Evolution.com,Smart-Grid.TMCnet.com, Smart Products Ecosystem, Robotics.TMCnet.com, Cable.TMCnet.com, Satellite Spotlight,Green.TMCnet.com, Healthcare.TMCnet.com, and Education.TMCnet.com. For more information about TMC, visit www.tmcnet.com.

About Radisys

Radisys (NASDAQ: RSYS) is a leading provider of embedded wireless infrastructure solutions for telecom, aerospace, defense and public safety applications. Radisys’ market-leading ATCA, IP Media Server and COM Express platforms coupled with world-renowned Trillium software, services and market expertise enable customers to bring high-value products and services to market faster with lower investment and risk. Radisys solutions are used in a wide variety of 3G & 4G / LTE mobile network applications including: Radio Access Networks (RAN) solutions from femtocells to picocells and macrocells, wireless core network applications, Deep Packet Inspection (DPI) and policy management; conferencing and media services including voice, video and data, as well as customized mobile network applications that support the aerospace, defense and public safety markets.

Radisys, Continuous Computing and Trillium are registered trademarks of Radisys Corporation.